The 3125 NMEA2000r Tank Sender Adaptor allows both European standard 0-180 Ohm and US standard 240-30 Ohm resistive tank level senders to connect to the NMEA2000r network. It supports fluid levels from Fuel Freshwater Wastewater Blackwater Oil and Live Well senders with up to 16 instances of each fluid type. It is of robust aluminium construction and is accurate to 1%.